Wiping and scraping mechanism of intaglio machines



Aug. 1l, `1931. F, WAI-rE I 1,818,441y

WIvPING AND SCRAPING MECHANISM OF INTAGLIO MACHINES Filed Dec. 19. 1928 6 Sheets-'Sheet iy ATTYS.

F. WAITE 1,818,441

WIPING AND SCRAPING MECHANISM OF INTAGL'IO MAHNS Aug. 11,?15231.

Filed Dec:A 19, 1928 6 Sheets-Sheet 4 vfivTcR 31nd.

F. wAlTE 1,818,441

WIPING AND SCRAPING MECHANISM OF INTAGLIO MACHINES Aug. 11, 1931.

Filed Dec. 19, 1928 6 Sheets-$heet 5 INVENTOR: 9km( MME I BMW/Lm Zm-/ 4*7 Allg. ll, 1931. ,F .WA|TE 1,818,441

WIPING AND SCRAPING MECHANISM Of' INTAGLIO MACHINES Filed Dec. 19, 1928 6 SheefcsfSheet 6 .45 plica Patented Aug. 11, 1931 l FRED WAI-TE, 0F IINGLEWOOD, lCTLEY, ENGLAND WIPING- AND SCRAPING MEGHANISIVI OF '.[NTAGrLIOA MACHINES Application `filed December 19, 1928, Serial No. 327,061, and in Great Britain December 20, 1927.

This invention relates to wiping mechanism I(and parts in connection therewith) thatl is used in die-stamping andplate printing machines which have metal blades for 5 sha-vinger removing the excess of ink from 'the printing surface, and particularly to that type wherein the wiping'member has a curved surface which lpresses `the wiping paper against the said printing surface and which is rocked as the die is being wiped by it, while itis held clear of the die as this is returning (after'imparting its impression) to the end or position where it is inked.

To permit the rocking actions of the wip- 171 ing member, this member has its leading end pivoted upon spring-actuated rods. The springs which are mounted on saidrods have their y lower ends resting upon supports through which the ends of the rods may slide, while upon said rods adjustable collars are fixed and arranged to press against the other endsr of the springs in order to enable the springs to force theI wiping member against the die.V l

Heretofore the supports for the lower ends of the springshave lbeen fixed or stationary so that their pressure upon the wiping member has increased as this member has been rocked fromwhere its leadingend'isin con- 30 tact with the die until its rear end is, brought to press thereon.

Bythese actions the pressure springs upon notion. f My Present invention consists, inthe apwaaeballxam @nalaat-.t9

control said spring pressure .and cause same to remain uniform through the whole rocking and Vwiping movements of the wiping member, and to increase or decrease or otherwise vary said pressure as I may find desirable or 50 advantageous. The devices which I empl-oy also enables me to entirely suspendthe actions of the wiping member when the printing surface does not require any other preparation than the mere scraping away of the superiiuous ink to prepare said surface to give the desired impressions. j

The bearings which carry the scraping blade above referred to aremade interchangeable with those, that carry a shaving blade that I use in conjunction with the wipingmembers, and are the only parts which are to detach from and apply to the machine when changing from photogravure printing to diestamping, since the Vother sets of parts which act in conjunction with the two separate kinds of blades occupy their respective positions without interfering with each other.

In order that my said invention may be readily understood, I have hereunto appended sheets of drawings illustrative thereof to which by figures and letters reference is made in the following description Fig. l isa side elevation of sufficient of the wiping mechanism'of a printing machine to show the application of our improved devices. In. this view the wiping member and its, operating parts are shown in the positions which they occupy whenthe wiping opera# tions are finished.

Fig. 2 is a similar view to Fig. 1 but shows the several positions of the different devices assumed at the commencement of the wiping actions. v l v Fig. 3 is a view of the parts shown by Figs; l and 2 as seen looking from right to left of said figures.

' Fig. l isa similar view toFifr 2 but shows certain 'Of the parts *Sheet er Cil' Cn i parts in order that same may be clearly undei-stood.

Fig. 5 is a view of the parts shown by Fig. 4 as seen looking from right to left of said ligure.

Figs. 6 and 7 are similar views to Figs. 2 and 3 respectively but show modiiications hereinafter described.

Fig. 8 is a similar view to Fig. G but shows only part of the devices in said former figure.

Fig. 9 is a similar view to Figs. 2 and 1 but shows connections for operating the front edge of the wiping member.

Fig. l0 is an end elevation of the parts sho-wn by Fig. 9 as seen from left to right of said ligure.

Fig. 11 is a side elevation of the devices made use of for giving ":he tilting action to the wiping member.

Fig. 12 an end elevation of the parts shown by 11 as seen looking Vfrom right to left of said figure.

VFigs 13 and 14 are end elevations respectively showing our arrangements of scraping and shaving devices which may be readily fixed in position when the wiping mechanism is placed out of action.

ln the several sheels of drawings 2 and 2a indicate the end frames of the machine and 3 the wiping member.

To attain the object of my invention l an range the lower ends 4? of the springs 4, which are mounted upon the rods 5, to be supported by the extending ends (3a of the camacCuated-i-evers G. As shownv by Figs. 1, 2, 3, 4 and 5 the supporting of the sprmgs 4 by the ends (la of the levers 6 is carried out by the employment of sleeves 7 which are arranged to enable or permit the ends of the rods 5 to slide within them.

rEhe ends Ga of the levers (i are bifurcated so that they span a part 7a which is fiattened and extends beyond the lower end of the sleeve in order to tale between the bifurcations Ga of said levers G. Or instead of making use ofthe sleeves 7 I malte use of a swivelling ybracket or member 7b which is pivoted to oscillate, upon the end 6e of the lever 6?), as shown by Figs. G and 7, in which case the lov/er end 4a of the spring 4 rests upon the swivelling bracket '7b while the end of the rod 4 passes through said bracket during the compressing of the spring 4 when thevwiping member 3 isbeing oscillated from its posiion snown by Figs. 2 and 4.

ln the arrangement. shown by Figs. 1 to 5, the rods 5 are guided through the brackets or bearings 8 while in the latter arrangement shown by Figs. (3 and 7 this bracket 8 for guiding the rods 5 may be dispensed with or `may be arranged to swivel as may be found advantageous.

. The rods 5 are the spring-actuated rods whichV are pivoted at 5a to the leading edge of the wiping-member 3 l ing the rocking motion to the wiping member 3 as is hereinafter described.

The lever 10 carrying the bowl 10a has also a pawl 12 pivoted upon it at 10b (preferably co-axially with the bowl 10a) and this pawl` 12v is for engagement with an appropriately shaped engaging surface 130J formed on a lever 13 that is fixed upon the shaft 9 upon which theV lever 10 is loosely mounted. By these means when the lever 13 is actuated by the pawl 12, as hereinafter explained the shaft 9 upon which the lever 13 is fixed will be oscillated by said lever 10 when it is moved by the actions of the cam 11 to carry its pawl 12 forward to engage with and -move the lever 13 in order 'to oscillate the shaft 9'. Since the levers 6 (or Gb) are fixed upon the shaft 9 thel said oscillating motions of said `shaft 9 cause the said levers (and 6b) also to oseillate so that their outer ends will comnence to press upon the springs 4 and thus yill raise or tend to raise the rods 5 and therefore the rear edge of the wiping member 3 into its operation vposition because said springs 4 have their upper ends 4b held against sliding over therods 5 bymeans of hoops 50 which are fixed upon said rods 5 for said springs to press against.

From this arrangement of the said devices, in accordance with the shape or formation of the cam 11, so will the ends of the levers G move over the rods 5 to press the springs 4 more 0r less as we may form the cam 11 so to do. The formation of the cam is of such ac-haracter as will meet the requirements of the movements of the wiping-member -3 to cause said wiping-member to be pressed with the desired pressurefof the springs 4 into contact with the surface 14 whichhas to ,be wiped, while during` the rocking act-ions of said member 3 from the position shown in 1 to the position shown in Fig. 2 the said desired compression Vof the springs is provided for in order to be maintained even or as desired by the cam 11 permitting the l OweringI or receding of the ends v of Athe levers 6 and V(3]) to be carried out in accordance with the receding actions or lowering movements ofthe leading edge of the wiping member 3.

llO

The-leverl which is fixed upon the: shaft l i -effectedlbylthe levers (Ebeling a1`^restedlbyl adeffinstable screwsiixedupon 'the side frames cam 11- tovcarry thel .pawl -12 -clear'of the aend 13a-of the? lever 13 v:as is shown byi-Figs. 2 lande.

'fWhenft'he pa'ivl vlever 310 inv this position Y"the 'cam'f' '1G-has' reached its? highest4- position ff (Fig.v 11) and-in doing so ithas raised alev'er "curved charactershoivn so as `to llift the paWl at '\`vhichtime 4the` actions oft-he' lWip'ingmembeiig 3 fare entirely' suspended.

Therunner A10a jon-the lever v10is kept in contact with the' *spring-10d.

thus oscillating the shaft' 19'=the lever 13 is also'oscllatedan'd by engaging the lever 17 x @said cam 16. This lever 2O is connected byl 1rod-23 to a 'lever 24 fixed' upona cross..

f 'fixed thereon, being connected by another rod i tothe arm 27,`fixed tothe Wipmgmember 3,v fthe said rocking actions are carried out in the usual and Well known' manner.

`V ploy in lconnectiontherewith7 my well known shaving'blade 30 (see Figs. 6 and 14) for clearmgFaWay `the excess olf-ink from the printing 'surfacela before theiviper commences its; actions.

"-*.f,n-1bearings orsupporting members 31 to' be dui'clely veftectcd.

fcarried bybraclets 32 Which have their en- -f'gagmgsurfaces a and Z) formed to rece1ve land* retain-same 'by the employment of a single-fixmg screw 33 ateach endthereom 'thus the removal of'said/blade() aswellas then`arrange^said scraping blade 30a (see fIi.ig.:13)to-have its supporting members 31a hap'edl toi t thesamel'engaging sur-faces' a?, ese-aridffb the Lbrackets13.2is'ethat thef'sam 1.11K-v ff' cam 11 by 'the-recoil'of the' cam 16. t

To 'enablelthe camY 16 to lraise thefl'ever "'17 ,itfact11atesthe runner- 21a which isI carriedr.

In thus making use oiY my 'sald blade '30 Iv arrangefsame to 'have `itsl tof l"openV spiral springs L1 several dravvmgs 1 may arrangeto make use ofclosed spiral springs by'ft-he add1t1on of 'for brmgmg such springs ing 'screws'l 33 `will secure' them 1in". position.

-Inthis'case I use the samef operating rod 34 *(oractuating Wh-ich'- the-11sual .and `Well -lrn'o'ivnldevices are eniployed)Vv for `actuating y F the-scraping blade30a 'thatlisvused in the ""Themarresting 0f 'the levers Gand" (Shin '1 "f'fthe positions described; :and Which arein the- "slowest positionsto lWhichl they -have'fmoved- `in order to 4relievetheirpressure 'on-the' ,if-Springseil, 'enable the lever 10 in following its l `allate'ral'arm :35y tothe' rod 34 (as is sh'ovvn by Fig. 13) to` 'ena-ble same to actua-te the blade a inthe reverse direction to that of the blade 30. Any suitable connection may *be provided' betnf'eenfthearm 35 and the H4scraping blade 30ato enable themovements "of'fsaid'armrby therod` 34l to cause the operation/ofthe scraping blade 30a.

'Tosuspend the actions of thev Wiper 3' for VIwhichfhas'itsfouterfend 17ay "formed of the# the purpose above statedv We arrange a paWl "28lilvhich ispivotedupon' the `franievv'ork 2 "i12 out 'of the path of lmotion of the 'lever 13 r' soithat-itfmay engage with an extension 20a "-i'ormedionvtlie outer lend of thelever 2O in "-vvhi'ch;r position it Will hold said lever 2O as The adjusting of the`pa1vl`28 in the position'stated isei'fectedbythe-attendant act- *uatingthe handlever29 so `that-it Will move the connecting rod- 29a into the position ishoivn by Fig. 11-'in orderto enable this rod 29a to place the catch 28 vintothe position y 'stated IVhen-the-catch28 is retaining the Theactionsof lthecam -16 also'elect: or

lever 2O as stated it retains also the shaft 19 in positionfor` enabling the lever v18 to -raise Lthe lever A 17r by Which means the engaging 'end' 17a 'of the said lever-17 will' raise the paWl 12 clear ofthe endv 13a oft-'he lever 13 as ishereinbetore explained.

In connection with the mechanism' hereinbelo-re described for operating' the wiping member 3 Ima'ke use of the usual cam actactuated-by the rods 5. These rods 36-are "actuated by levers 37engaging springs 38 mountedupon sa1d'rods 36,-and these levers are lixed upon a cross shaft 39 which is 'caused towos'cillate by-v alever 40, fixed thereonfhaving its runner' Y:LOa'in engagement With a cam 41 lixed upon the shaft 12.

It is obviousthat instead of making use as sho-Wn bythe parts required into action. y

Such being the nature of my invention what I claim is t y j1. vIn"wipingmechanism for printing machinesg means for remo-ving the `excess ofink from the printing surfaeey afivipingmember,

`supporting rods pivotally connected tothe leading-and rear edges ofprsaid member7` a 'spring for? acting I upon eachv of "said'rods, leversfo-r pressing upon said spriI-igs;- isha-tits upon" which-the levers are fixedeath er levers fixed on said shafts, a cam for actuating the lever and its shaft for effecting pressure on the rear edge of the wiping member, an engaging member operating in connection with the lever fixed upon the shaft for pressing upon the leading edge of the wiping member, a lever loosely mounted upon said shaft and arranged to actuate the engaging member operating with the lever fixed upon the said ing member, a lever fixed upon the shaftshaft, and a cam for actuating the loosely mounted lever.

2. In wiping mechanism for printing machines, means for removing the excess of ink from the printing surface, a wiping member, supporting rods pivotally connected to the leading and rear edges of said member, a spring for acting upon each of said rods, levers for pressing upon said springs, shafts upon which the levers are fixed, other levers fixed on said shafts, a cam for actuating the lever and its shaft for effecting the pressure on the rear edge of the wiping member, an engaging member 'operating in connection with the lever fixed upon the shaft for pressing upon the leading edge of the wiping member, a lever loosely mounted upon said shaft and arranged to actuate the engaging member operating with the lever fixed upon the said shaft, a cam for actuating the loosely mounted lever, and lever and cam devices for effecting the rocking movements of the wiping member.

3. In wiping mechanism for printing machines, means for removing the excess of ink from the printing surface,-a wiping member, supporting rods pivotally connected to the leading and rear edges of said member, a spring for acting upon each of said rods, levers for pressing upon said springs, shafts upon which thelevers are fixed, other levers fixed on said shafts, a cam for actuating the lever and its shaft for effecting the pressure on the rear edge of the wiping member, an engaging member operating in connection with the `lever fixed upon the shaft for pressing upon the leading edge of the wiping member, a lever loosely mounted upon said vshaft and arranged to actuate the engaging member operating with the lever fixed upor the said shaft, a cam for actuating the loosely mounted lever, lever and cam ydevices for effecting the rocking movements of the wipwhich is oscillated by the cam -that Yeffects l"the rocking movements of the wiping member and a levcr loosely mounted on the said shaft and actuated by the lever which is fixed thereon to control the engaging member through which motion is transmitted to the leading pair of springs.

4. In wiping mechanism for printing machines, means for removing the excess of ink from the printing surface, a wiping member, supporting rods pivotally connected to the leading and rear edges of said member,A a

spring for acting upon each of said rods, a lever for pressing upon each of said springs, shafts upon which the levers are fixed, other levers fixed on said shafts, a cam for actuating the lever and its shaft for effecting the pressure on the rear edge of the wiping member, an engaging member operating in connection with the lever fixed upon the shaft for pressing upon the leading edge of the wiping member, a lever loosely mounted upon said shaft and arranged to actuate the engaging member operating withV the lever fixed upon the said shaft, a cam for actuating the loosely mounted lever, lever and Vcam devices for effecting the rocking movements of the wiping members, a pawl for engaging an extension from the lever which effects the rocking actions of the wiping member in order to suspend its movements and therefore to check or suspend the action of theV feed, a connecting rod pivoted to said pawl and a hand lever for actuatingsaid rod to effect the said engagement of the pawl.

5. In wiping mechanism for printing machines, means for removing the Vexcess of ink from the printing surface, a wiping member, supporting rods pivotally connected to the leading and rear edges of said member, a spring for acting upon each of said rods, a lever for pressing upon said spring, shafts upon which the levers are fixed, other levers vfixed on said shafts, a cam for actuating the lever and its shaft for effecting the pressure on the rear edge of the wiping member, an engaging member operating in connection with the lever fixed upon the shaft for pressing upon the leading edge of the wiping member, a lever looselyk mounted upon said shaft and arranged to actuate the engaging member operating with the lever fixed upon the said shaft, a cam for actuating the loosely mounted lever` lever and cam devices for effecting the rocking movements of the wiping member, a lever fixed upon the shaft which is oscillated by the cam that effects the rocking movements -of the wiping member, a lever loosely mounted on the said shaft and actuated by the lever which is fixed thereon to control the engaging member through which motion is transmitted to the leading edge of the wiping member, a pawl for engaging an extension from the lever which effects the rocking actions of the wiping member in order to suspend said actions and therefore to check or arrest the actions of the wiping member, a connecting rod pivoted to said pawl and a hand lever for actuating said rod to effect the -said engagementv of the pawl. i

6. In combination with wiping mechanism for printing machines, a'blade for removing the excess of ink`from the printing surface, devices for operating said blade, a wiping member, supporting rods-'pivotally connected to said member, springs for acting upon said rods, levers for pressing .upon said springs, shafts upon which the levers areV fixed, other levers xed on said shafts, a cam for actuating the lever and its shaft for effecting the pressure on the rear edge of the wiping member, an engaging member operating in connection With the lever iixed upon the shaft for pressing upon the leading edge of the wiping member, a lever loosely mounted upon said shaft and arranged to actuate the engaging member operating with the lever Xed upon the said shaft, and a cam for actuating the loosely mounted lever.

FRED WAITE. 

